Israel Launched Attack in Syria, U.S. Says

By

Adam Entous,

Julian E. Barnes and

Colleen McCain Nelson

Updated May 4, 2013 10:54 a.m. ET

WASHINGTON—Israeli warplanes bombed a target in Syria in an overnight strike Thursday, U.S. officials said, the second such attack this year in a sign of growing Israeli concern that advanced Syrian weapons could fall into terrorists' hands.

The attack came as President Barack Obama, visiting Central America, wouldn't rule out options for the civil war but said he doubted the U.S. would send ground troops to Syria. In a separate...